checksensible.scala:1: error: class Test needs to be abstract, since method isabstract is not defined class Test { ^ checksensible.scala:3: warning: comparing values of types Ordered[Unit] and Unit using `>' will always yield false println((c = 1) > 0) ^ checksensible.scala:4: warning: comparing values of types Ordered[Unit] and Unit using `<=' will always yield true println((c = 1) <= 0) ^ checksensible.scala:5: warning: comparing values of types Unit and Int using `==' will always yield false println((c = 1) == 0) ^ checksensible.scala:7: warning: comparing values of types Int and java.lang.String using `==' will always yield false println(1 == "abc") ^ checksensible.scala:8: warning: comparing values of types Int and Boolean using `!=' will always yield true println(1 != true) ^ checksensible.scala:10: warning: comparing a fresh object using `==' will always yield false println(((x: Int) => x + 1) == null) ^ checksensible.scala:11: warning: comparing a fresh object using `==' will always yield false println(new Object == new Object) ^ checksensible.scala:12: warning: comparing a fresh object using `!=' will always yield true println(new Exception() != new Exception()) ^ checksensible.scala:15: warning: comparing values of types Int and Null using `==' will always yield false if (foo.length == null) // == 0 makes more sense, but still ^ checksensible.scala:24: warning: comparing values of types Unit and Int using `!=' will always yield true while ((c = in.read) != -1) ^ checksensible.scala:30: warning: comparing values of types Unit and Boolean using `==' will always yield false println({} == true) ^ checksensible.scala:32: warning: comparing a fresh object using `==' will always yield false println(new Object == 1) ^ checksensible.scala:33: warning: comparing values of types Int and java.lang.Object using `==' will always yield false println(1 == (new Object)) ^ checksensible.scala:37: warning: comparing values of types Int and Unit using `!=' will always yield true println(1 != println) ^ checksensible.scala:38: warning: comparing values of types Int and Symbol using `!=' will always yield true println(1 != 'sym) ^ 15 warnings found one error found